CN211930291U - Lithium iron phosphate battery protection board - Google Patents
Lithium iron phosphate battery protection board Download PDFInfo
- Publication number
- CN211930291U CN211930291U CN202020470712.0U CN202020470712U CN211930291U CN 211930291 U CN211930291 U CN 211930291U CN 202020470712 U CN202020470712 U CN 202020470712U CN 211930291 U CN211930291 U CN 211930291U
- Authority
- CN
- China
- Prior art keywords
- iron phosphate
- lithium iron
- module
- mos tube
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model aims at providing a lithium iron phosphate battery protection shield, include: one end of the discharge MOS tube is connected to the anode of the lithium iron phosphate battery connected in series; one end of the charging MOS tube is connected with the other end of the discharging MOS tube, and the other end of the charging MOS tube is connected to the anode of the output end of the system; one end of the current limiting module is connected to the common end of the charging MOS tube and the discharging MOS tube; the other end of the current limiting module is connected to the MCU main control unit; the pre-charging module is connected to the MCU main control unit; the current detection resistor is connected in series between the negative electrodes of the lithium iron phosphate batteries connected in series and the negative electrode of the output end of the system, and the current detection resistor is connected with the MCU main control unit; the voltage sampling equalization module is connected with the lithium iron phosphate batteries connected in series; AFE energy repayment unit respectively with voltage sampling equalization module and MCU main control unit link to each other, the utility model discloses can realize effectively carrying out real time monitoring and protection to filling, discharging of group battery.
Description
Technical Field
The utility model relates to a lithium iron phosphate battery protection shield.
Background
As a novel environment-friendly, high-efficiency and instant power battery capable of discharging large current, the lithium iron phosphate battery has unique performance which is gradually accepted by the market, and is mainly applied to solar street lamps, electric tools, automobiles and trains at present. In the fields of high-speed rails and the like, the reference voltage of a lithium iron phosphate power battery is 3, 2V, in order to meet the use requirement, a plurality of batteries are required to be connected in series to reach the required voltage, and after the same batch of battery cores are manufactured, the capacity and the internal resistance of the battery cores have difference conductance, so that the batteries with smaller difference conductance are matched into one group before combination, so as to achieve the purpose of prolonging the cycle service life of the batteries to a certain extent.
For a battery pack formed by a plurality of batteries connected in series, each battery of the battery pack needs to be charged and discharged, and the solar street lamp needs to adopt higher input voltage or even instantly variable voltage, so that the conventional universal battery protection board cannot meet the popularization and application of the batteries in the solar field, and the popularization of the battery protection board in the field is hindered.
In order to solve the problem, an electronic device with high voltage withstanding value and transient large current impact resistance must be adopted, so that the size is large, the cost is high, and the electronic device cannot meet the technical development requirement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lithium iron phosphate battery protection shield.
The utility model provides a lithium iron phosphate battery protection shield should include:
one end of the discharge MOS tube is connected to the anode of the lithium iron phosphate batteries connected in series;
one end of the charging MOS tube is connected with the other end of the discharging MOS tube, and the other end of the charging MOS tube is connected to the anode of the output end of the system;
one end of the current limiting module is connected to the common end of the charging MOS tube and the discharging MOS tube;
the other end of the current limiting module is connected to the MCU main control unit;
the pre-charging module is connected to the MCU main control unit;
the current detection resistor is connected between the negative electrodes of the lithium iron phosphate batteries connected in series and the negative electrode of the output end of the system in series, and the current detection resistor is connected with the MCU main control unit;
the voltage sampling and balancing module is connected with the lithium iron phosphate batteries connected in series;
and the AFE energy feedback unit is respectively connected with the voltage sampling equalization module and the MCU main control unit.
Further, in the lithium iron phosphate battery protection board, the protection board further includes:
the LED heating device comprises a storage module, a heating module, a communication module, an LCD module and an LED module, wherein the storage module, the heating module, the communication module, the LCD module and the LED module are respectively connected to the MCU main control unit.
Further, in the above-mentioned lithium iron phosphate battery protection board, the LED module has 6 LED lamps to instruct, wherein, 4 white LED lamps are electric quantity indicator lamp for current battery pack residual capacity indicator lamp, and 1 red LED lamp is for reporting an emergency and asking for help or increased vigilance, trouble pilot lamp when protecting, and 1 white LED lamp is battery standby, charging, discharge status pilot lamp.
Further, in the lithium iron phosphate battery protection board, the protection board further includes:
and the NTC sampling module is connected with the lithium iron phosphate batteries connected in series, and the AFE energy feedback unit is connected with the NTC sampling module.
Compared with the prior art, the utility model discloses a: one end of the discharge MOS tube is connected to the anode of the lithium iron phosphate batteries connected in series; one end of the charging MOS tube is connected with the other end of the discharging MOS tube, and the other end of the charging MOS tube is connected to the anode of the output end of the system; one end of the current limiting module is connected to the common end of the charging MOS tube and the discharging MOS tube; the other end of the current limiting module is connected to the MCU main control unit; the pre-charging module is connected to the MCU main control unit; the current detection resistor is connected between the negative electrodes of the lithium iron phosphate batteries connected in series and the negative electrode of the output end of the system in series, and the current detection resistor is connected with the MCU main control unit; the voltage sampling and balancing module is connected with the lithium iron phosphate batteries connected in series; AFE energy repayment unit, AFE energy repayment unit respectively with voltage sampling equalization module and MCU main control unit link to each other, the utility model discloses can realize effectively to the group battery fill, discharge and carry out real time monitoring and protection.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 shows a schematic diagram of a lithium iron phosphate battery protection board according to an embodiment of the present invention.
The same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a lithium iron phosphate battery protection board, include:
a discharge MOS tube 1, one end of which is connected to the positive electrode (B +) of the series-connected lithium iron phosphate batteries;
specifically, the lithium iron phosphate batteries connected in series can be formed by connecting 16 lithium iron phosphate batteries in series;
a charging MOS tube 2, one end of which is connected with the other end of the discharging MOS tube, and the other end of which is connected to the positive pole (P +) of the output end of the system;
one end of the current limiting module 3 is connected to the common end of the charging MOS tube and the discharging MOS tube so as to control the maximum current of the charging MOS tube and the discharging MOS tube;
the other end of the current limiting module is connected to the MCU main control unit, and the current limiting module receives a control signal of the MCU main control unit;
the pre-charging module 5 is connected to the MCU main control unit and is used for receiving or sending related information to determine a working mode;
preferably, the lithium iron phosphate battery protection board further includes: the device comprises a storage module 6, a heating module 7, a communication module 8, an LCD module 9 and an LED module 10, wherein the storage module, the heating module, the communication module, the LCD module and the LED module are respectively connected to the MCU main control unit so as to receive and execute the command of the MCU main control unit;
preferably, the lithium iron phosphate battery protection board further includes: the current detection resistor 11 is connected in series between a negative electrode (B-) of the lithium iron phosphate batteries connected in series and a negative electrode (P-) of an output end of the system, is connected with the MCU main control unit, and is used for detecting output current of the system and sending a detection signal to the MCU main control unit;
the charging and discharging current of the battery pack is collected and monitored in real time through a current detection resistor connected between the negative electrode B-of the battery and the output end P-of the system, so that the charging current and the discharging current are alarmed and protected. The temperature rise is less than 40 ℃, and the precision is better than +/-1%.
The voltage sampling and balancing module 12 is connected with the lithium iron phosphate batteries connected in series and is used for collecting the voltage of each battery in the lithium iron phosphate batteries connected in series;
the system can realize the real-time acquisition and monitoring of the voltage of the 8-16-section series-connection battery cell through the voltage sampling equalization module, so as to realize the over-voltage and under-voltage alarm and protection of the battery cell. The voltage detection precision of the battery cell is +/-10 mV at the temperature of 0-45 ℃ and +/-30 mV at the temperature of-20-70 ℃. The alarm and protection parameter set values can be changed through the upper computer.
The NTC sampling module 13 is connected with the lithium iron phosphate batteries connected in series and is used for acquiring the temperature and the ambient temperature of the lithium iron phosphate batteries connected in series;
herein, the cell temperature, the ambient temperature and the power board temperature are collected and monitored in real time through the NTC sampling module, so as to realize high-temperature and low-temperature alarm and protection. The temperature detection precision is +/-2 ℃. The alarm and protection parameter set values can be changed through the upper computer.
And the AFE energy feedback unit 14 is respectively connected with the voltage sampling equalization module, the NTC sampling module and the MCU main control unit, and transmits voltage and temperature information and receives and executes a command of the MCU main control unit.
In addition, the alarm and protection parameter set values can be changed by connecting the upper computer with the communication module.
The current detection resistor and the current limiting module can realize the detection and protection functions of output short circuit.
The utility model discloses still can be used to the calculation of real-time battery residual capacity, once accomplish the study of filling total capacity, SOC estimation precision is superior to 5%. The battery has the function of calculating the number of charge-discharge cycles, and when the accumulated discharge capacity of the battery pack reaches 20% of the set full capacity, the cycle number is increased once, and the set value of the battery cycle capacity parameter can be changed through the upper computer.
The charging MOSFET switch and the discharging MOSFET switch adopt low internal resistance and large current, and are optimally designed aiming at the startup, zero switching and twice charging withstand voltage of a large-capacitance capacitive load applied by a backup power supply.
When charging, the unbalanced battery cores can be balanced, and the service time and the cycle life of the battery can be effectively prolonged. The equalizing start voltage and the equalizing pressure difference can be set through the upper computer.
Optionally, the LED module has 6 LED lights for indication, wherein, 4 white LED lights are electric quantity indicator lights as current battery pack remaining electric quantity (SOC) indicator lights, 1 red LED light is a fault indicator light when alarming and protecting, and 1 white LED light is a battery standby, charging and discharging status indicator light.
Preferably, the utility model discloses a lithium iron phosphate battery protection Board (BMS) still can have manual and automatic dormancy function, does not have under the charge-discharge condition outside, and the battery lasts 48 hours automatic dormancy. The BMS enters a sleep state while maintaining the 1 minute communication when the battery pack is over-discharged for protection. Accessible manual 6S that presses reset button, 6 LED lamps light the back in proper order, and BMS gets into the dormancy. The standby dormancy can be set through the upper computer.
The PC or the intelligent front end can realize data monitoring, operation control and parameter setting of the battery through the communication module through commands such as remote measurement, remote signaling, remote regulation, remote control and the like. The terminal equipment CAN read the sum of the battery data of all parallel PACKs through the CAN interface.
The historical data is stored in the storage module when the state transition occurs according to the BMS; storing measurement data of various alarms, protection triggers and elimination in real time; the recording start time, the recording end time and the recording interval time can be set through the communication module to store the measurement data in a certain time period. And reading the historical data through an upper computer, and storing the historical data as an excel file into a computer.
The battery management parameters such as the over-voltage and under-voltage of the single battery, the total voltage of the battery, the charging and discharging overcurrent, the high and low temperature of the battery core, the high and low temperature of the environment, the balancing strategy, the serial number of the batteries, the battery capacity and the like can be reset through the upper computer.
The voltage-related function, the temperature-related function, the current-related function (the output short-circuit function does not support the turn-off setting), the capacity-related function, and the like can be turned on or off through the setting of the upper computer.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the voltage sampling equalization module detects that the voltage of any battery in the lithium iron phosphate batteries connected in series is higher than the monomer overcharge protection setting value, the lithium iron phosphate battery protection board enters into an overcharge protection state, the charging MOS tube is closed, and the charging device stops charging the lithium iron phosphate batteries connected in series; after the monomer overvoltage protection, when one battery with the highest monomer voltage in the series-connected lithium iron phosphate batteries is reduced to be below a monomer overcharge recovery value and the residual electric quantity (SOC) of the series-connected lithium iron phosphate batteries is lower than 96%, the overcharge protection state is removed, and the charging MOS tube is switched on and can also be discharged.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the voltage sampling equalization module detects that the total voltage of the lithium iron phosphate batteries connected in series is higher than the total voltage overcharge protection setting value, the lithium iron phosphate battery protection board enters an overcharge protection state, the charging MOS transistor is turned off, and the charging device stops charging the lithium iron phosphate batteries connected in series; and when the total voltage drops below a total voltage overcharge recovery value and the residual electricity quantity (SOC) of the lithium iron phosphate batteries connected in series is lower than 96%, removing an overcharge protection state, and turning on the charging MOS tube or removing discharge.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the voltage sampling equalization module detects that the voltage of any battery in the lithium iron phosphate batteries connected in series is lower than the monomer over-discharge protection setting value, the lithium iron phosphate battery protection board enters into an over-discharge protection state, the discharge MOS transistor is turned off, the load stops discharging for the lithium iron phosphate batteries connected in series, and the lithium iron phosphate battery protection board is turned off after 1 minute communication is maintained; after the over-discharge protection occurs, the series-connected lithium iron phosphate batteries are charged to relieve the over-discharge protection state, or after the reset key operation, the lithium iron phosphate battery protection board is started to detect whether the voltage of the series-connected lithium iron phosphate batteries reaches a recovery value again.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the voltage sampling equalization module detects that the voltage of the lithium iron phosphate batteries connected in series is lower than the total voltage over-discharge protection set value, the lithium iron phosphate battery protection board enters into an over-discharge protection state, the discharge MOS transistor is turned off, the load stops discharging the lithium iron phosphate batteries connected in series, and the lithium iron phosphate battery protection board is shut down after 1 minute communication is maintained; after the over-discharge protection occurs, the series-connected lithium iron phosphate batteries are charged to relieve the over-discharge protection state, or through the operation of a reset key, the lithium iron phosphate battery protection board is started to detect whether the voltage of the battery pack reaches a recovery value again.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the current detection resistor detects that the charging current exceeds the charging overcurrent protection setting value and reaches the delay time, the lithium iron phosphate battery protection board enters the charging overcurrent protection, the charging MOS transistor is turned off, and the charging device stops charging the battery;
after charging overcurrent protection occurs, the lithium iron phosphate battery protection board automatically delays to recover, the charging MOS tube is switched on, the current of an external charger is detected again, and charging overcurrent protection can be removed through discharging.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the current detection resistor detects that the discharge current exceeds the discharge overcurrent protection setting value and reaches the delay time, the lithium iron phosphate battery protection board enters the discharge overcurrent protection, the discharge MOS transistor is disconnected, and the load stops charging the battery;
after the discharge overcurrent protection occurs, the lithium iron phosphate battery protection board automatically delays and recovers, the discharge MOS tube is switched on, the external load current is detected again, and the discharge overcurrent protection can be removed during charging.
In addition, the discharge overcurrent protection can have secondary protection, and the transient overcurrent protection and the discharge overcurrent protection can be recovered as same. The number of transient overcurrent protection is locked when reaching the condition, and the recovery is carried out by shutting down the computer at the start-up or removing the charging.
Preferably, in the aspect of temperature protection, the BMS may detect 6 temperature detection ports through NTC sampling, and monitor temperature changes in real time to achieve a protective measure.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, in a charging and discharging state, when the NTC sampling module detects that the temperature of any battery in the lithium iron phosphate batteries connected in series is higher than a high temperature protection setting value, the lithium iron phosphate battery protection board enters high temperature protection, the charging MOS transistor and the discharging MOS transistor are both disconnected, and the lithium iron phosphate battery protection board stops charging or discharging; when the temperature of each battery in the series-connected lithium iron phosphate batteries is lower than a high-temperature recovery value, the lithium iron phosphate battery protection board recovers charging or discharging.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, in a charging and discharging state, when the NTC sampling module detects that the temperature of any battery in the lithium iron phosphate batteries connected in series is lower than a low-temperature protection setting value, the lithium iron phosphate battery protection board enters low-temperature protection, the charging MOS tube and the discharging MOS tube are both disconnected, and the lithium iron phosphate battery protection board stops charging or discharging; and when the temperature of each battery in the series-connected lithium iron phosphate batteries is higher than a low-temperature recovery value, the lithium iron phosphate batteries are protected to recover charging or discharging.
In an embodiment of the lithium iron phosphate battery protection board of the present invention, when the NTC sampling module detects that the ambient temperature is higher than the ambient high temperature setting value, the lithium iron phosphate battery protection board alarms, and the lithium iron phosphate battery protection board does not stop charging and discharging; when the NTC sampling module detects that the power temperature is higher than a power protection set value, the lithium iron phosphate battery protection enters power high-temperature protection, the charging MOS tube and the discharging MOS tube are both disconnected, and the lithium iron phosphate battery protection stops charging and discharging.
The utility model provides a special protection shield of lithium iron phosphate battery realizes effectively filling, discharging of group battery through special protection shield and carries out real time monitoring and protection, for example can prevent that the group battery from overcharging, cross discharging, and overheated safety protection function such as overflows ensures the safe effectual operation of group battery. The utility model discloses can guarantee at high temperature, outside short circuit, when circuit board power tube short circuit, still can protect battery safety, not catch fire.
The existing lithium iron phosphate battery protection board has the defects that the battery is damaged and even a fire disaster is possibly caused under the condition that a high-temperature power tube or a short-circuit power tube is damaged and short-circuited. The utility model discloses to the lithium iron phosphate battery protection shield can effectively solve above problem. The utility model discloses a lithium iron phosphate battery protection board mainly is to chargeable lithium iron phosphate battery, plays guard action's integrated circuit board, for example effectively prevents that the battery from overcharging, and the overdischarge overflows, and the short circuit reaches ultra-high temperature operational environment safety.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.
Claims (7)
1. The utility model provides a lithium iron phosphate battery protection board, wherein, this lithium iron phosphate battery protection board includes:
one end of the discharge MOS tube is connected to the anode of the lithium iron phosphate batteries connected in series;
one end of the charging MOS tube is connected with the other end of the discharging MOS tube, and the other end of the charging MOS tube is connected to the anode of the output end of the system;
one end of the current limiting module is connected to the common end of the charging MOS tube and the discharging MOS tube;
the other end of the current limiting module is connected to the MCU main control unit;
the pre-charging module is connected to the MCU main control unit;
the current detection resistor is connected between the negative electrodes of the lithium iron phosphate batteries connected in series and the negative electrode of the output end of the system in series, and the current detection resistor is connected with the MCU main control unit;
the voltage sampling and balancing module is connected with the lithium iron phosphate batteries connected in series;
and the AFE energy feedback unit is respectively connected with the voltage sampling equalization module and the MCU main control unit.
2. The lithium iron phosphate battery protection plate as claimed in claim 1, further comprising:
the LED heating module comprises a storage module, a heating module, a communication module, an LCD module and an LED module, wherein the storage module, the heating module, the communication module, the LCD module and the LED module are respectively connected to the MCU main control unit.
3. The lithium iron phosphate battery protection panel as claimed in claim 2, wherein the LED module has 6 LED light indicators.
4. The lithium iron phosphate battery protection plate as claimed in claim 3, wherein the white LED lamps in the 6 LED lamp fingers are power indicator lamps and current battery pack remaining power indicator lamps.
5. The lithium iron phosphate battery protection plate as claimed in claim 3, wherein 1 red LED lamp in the 6 LED lamp fingers is a fault indicator lamp for warning and protection.
6. The lithium iron phosphate battery protection panel as claimed in claim 3, wherein 1 white LED lamp in the 6 LED lamp fingers is a battery standby, charging and discharging status indicator lamp.
7. The lithium iron phosphate battery protection plate as claimed in claim 1, further comprising:
the NTC sampling module, NTC sampling module is connected with the lithium iron phosphate battery who establishes ties, AFE energy repayment unit with NTC sampling module connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470712.0U CN211930291U (en) | 2020-04-02 | 2020-04-02 | Lithium iron phosphate battery protection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470712.0U CN211930291U (en) | 2020-04-02 | 2020-04-02 | Lithium iron phosphate battery protection board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211930291U true CN211930291U (en) | 2020-11-13 |
Family
ID=73373959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020470712.0U Active CN211930291U (en) | 2020-04-02 | 2020-04-02 | Lithium iron phosphate battery protection board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211930291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910034A (en) * | 2021-01-20 | 2021-06-04 | 广东博力威科技股份有限公司 | Dust collector battery management method and device, electronic equipment and storage medium |
| CN114696425A (en) * | 2022-04-29 | 2022-07-01 | 无锡锐祺通讯技术有限公司 | Equalization method of lithium iron phosphate battery pack and battery equalization charging system |
-
2020
- 2020-04-02 CN CN202020470712.0U patent/CN211930291U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910034A (en) * | 2021-01-20 | 2021-06-04 | 广东博力威科技股份有限公司 | Dust collector battery management method and device, electronic equipment and storage medium |
| CN114696425A (en) * | 2022-04-29 | 2022-07-01 | 无锡锐祺通讯技术有限公司 | Equalization method of lithium iron phosphate battery pack and battery equalization charging system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111313510A (en) | Lithium iron phosphate battery protection board | |
| CN104052130B (en) | For ferric phosphate lithium cell power-supply management system and the method for work of service robot | |
| CN107017670B (en) | Battery pack monitoring system and monitoring method thereof | |
| CN115514064B (en) | Battery management system for lithium battery power supply system | |
| CN109649215A (en) | Electric vehicle lithium battery security monitoring management system | |
| CN204597507U (en) | A kind of battery management control system being provided with redundancy voltage and current detection circuit | |
| CN210577909U (en) | Base station backup power supply management system and integrated equipment with same | |
| CN104064827B (en) | Nickel-metal hydride battery pack with safety protection system | |
| CN110116622A (en) | Battery system used for rail vehicle | |
| CN212012176U (en) | Battery management system | |
| CN109659990A (en) | Electric vehicle lithium battery security monitoring management system | |
| CN103354377A (en) | Automatic circulation control and protection circuit for lithium battery of energy storage power station | |
| CN211930291U (en) | Lithium iron phosphate battery protection board | |
| CN208401585U (en) | A kind of charge-discharge control circuit | |
| CN215498350U (en) | BMS control system of energy storage system | |
| CN209994127U (en) | BMS protection shield suitable for on storage battery car | |
| CN208767836U (en) | A kind of battery management system | |
| CN204597509U (en) | A kind of battery management control system being provided with voltage comparator circuit | |
| CN211405532U (en) | Household energy storage inverter and lithium battery parallel operation system | |
| CN112009293A (en) | Battery charging cabinet detection system and battery charging cabinet | |
| CN102263432A (en) | Gush-surplus lithium battery storage battery | |
| CN203983968U (en) | A kind of ferric phosphate lithium cell group baffle | |
| CN115514067B (en) | Energy storage battery pack management system device | |
| CN204538792U (en) | A kind of parallel power supply system and power module | |
| CN210273527U (en) | Battery pack protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |